如何检查两个数组合并以及是否存在值以添加新键 - how to check two array merging and if exist value to add a new key

how to check two array merging and if exist value to add a new key

$now = 校验键

$all = 所有数据

我需要检查数组中的某个 id $all

$now = array(13,15,18);
$all = 
Array(
    [0] => Array
        (
            [lid] => 4
            [name] => aaaaa
        )
    [1] => Array
        (
            [lid] => 12
            [name] => s
        )
    [2] => Array
        (
            [lid] => 13
            [name] => aaa
        )
    [3] => Array
        (
            [lid] => 14
            [name] => bbb
        )
    [4] => Array
        (
            [lid] => 15
            [name] => ccc
        )
    [5] => Array
        (
            [lid] => 16
            [name] => ddd
        )
    [6] => Array
        (
            [lid] => 17
            [name] => eee
        )
    [7] => Array
        (
            [lid] => 18
            [name] => fffff
        )
)

$now值是盖子，我需要使用$now来检查$all...

$now为 13，15，18

$all 有 8 行盖子： 4，12，13，14，15，17，18

13，

15，18 在数组中

所以我需要添加一个新键和值 ext=1。

设置为：

Array(
    [0] => Array
        (
            [lid] => 4
            [name] => aaaaa
            [ext] => 0
        )
    [1] => Array
        (
            [lid] => 12
            [name] => s
            [ext] => 0
        )
    [2] => Array
        (
            [lid] => 13
            [name] => aaa
            [ext] => 1
        )
    [3] => Array
        (
            [lid] => 14
            [name] => bbb
            [ext] => 0
        )
    [4] => Array
        (
            [lid] => 15
            [name] => ccc
            [ext] => 1
        )
    [5] => Array
        (
            [lid] => 16
            [name] => ddd
            [ext] => 0
        )
    [6] => Array
        (
            [lid] => 17
            [name] => eee
            [ext] => 0
        )
    [7] => Array
        (
            [lid] => 18
            [name] => fffff
            [ext] => 1
        )
)

你应该遍

历你的$all数组，如下所示：

foreach ($all as &$item) {
    $item['ext'] = (in_array($item['lid'], $now) ? 1 : 0);
}

以下是您可以尝试的：

   <?php
           $now = array(13,15,18);
           $all = array(array('lid'=>4,'name'=>'aaaa'),array('lid'=>12,'name'=>'s'),array('lid'=>13,'name'=>'aaaa'),array('lid'=>14,'name'=>'bbb'),array('lid'=>15,'name'=>'ccc'),array('lid'=>16,'name'=>'ddd'),array('lid'=>17,'name'=>'eeee'),array('lid'=>18,'name'=>'ffff'));

           //echo"<pre>";print_r($all);
           $i = 0;
           foreach($all as $a){
             if (in_array($a['lid'], $now))
                {
                  $all[$i]['ext'] = 1;
                }
             else
                {
                  $all[$i]['ext'] = 0;
                }
             $i++;
           }
           echo"<pre>";print_r($all);

  ?>

您需要执行以下操作：

$now = array(12,14);
$all = array(
    array(
            "lid" => 4,
            "name" => "aaaaa"
        ),
    array(
            "lid" => 12,
            "name" => "s"
        ),
    array(
            "lid" => 13,
            "name" => "aaa"
        ),
    array(
            "lid" => 14,
            "name" => "bbb"
        )
        );
$i = 0;
foreach ( $all as $each ) {
    if ( in_array($each['lid'],$now) ) {
        $all[$i]['ext'] = 1;
    } else {
        $all[$i]['ext'] = 0;
    }
    $i++;
}
print_r($all);

像这样尝试

foreach($all AS $key => $a) {
    $all1[$key] = $a;
    $all1[$key]['ext'] = 0;
    if(in_array($a['lid'], $now)) {
        $all1[$key]['ext'] = 1;
    }
}

print_r（$all 1）;

print_r（$all）;